What is the reason Mercury has so little gas in its atmosphere?
a. Its mass is small.
b. It has a high temperature.
c. It is close to the Sun.
d. Its escape velocity is low.
e. all of the above
e. all of the above
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Use figure E2.12 to specify the direction of the net force that the neutral atom exerts on the dipole. (Hint: Think of any dipole(s) as independent charged particles.
A. A B. B C. C D. D E. Zero F. Other G. AA H. BB I. CC J. DD
Stars evolve along the main sequence
Indicate whether the statement is true or false
Springs: A force of 30 N stretches a very light ideal spring 0.73 m from equilibrium. What is the force constant (spring constant) of the spring?
A. 41 N/m B. 22 N/m C. 34 N/m D. 46 N/m
A telescope with a 60 mm objective lens collects how many times as much light as does your eye's 6 mm exit pupil?
A) 5 times B) 10 times C) 25 times D) 100 times E) 250 times